反应条件对Pt/SAPO-11催化油脂一步加氢制异构烷烃的影响

doi:10.1016/S1872-2067(11)60524-X

催化学报 ›› 2013, Vol. 34 ›› Issue (6): 1128-1138.DOI: 10.1016/S1872-2067(11)60524-X

反应条件对Pt/SAPO-11催化油脂一步加氢制异构烷烃的影响

王从新^a,c, 刘千河^a,c, 刘雪斌^d, 阎立军^e, 罗琛^e, 王磊^a, 王炳春^a, 田志坚^a,b

a 中国科学院大连化学物理研究所洁净能源国家实验室, 辽宁大连116023;
b 中国科学院大连化学物理研究所催化基础国家重点实验室, 辽宁大连116023;
c 中国科学院大学, 北京100049;
d 碧辟(中国)投资有限公司能源创新实验室, 辽宁大连116023;
e 中国石油天然气股份有限公司石油化工研究院, 北京100195

收稿日期:2012-11-24 修回日期:2012-12-24 出版日期:2013-06-07 发布日期:2013-06-09
通讯作者: 田志坚
基金资助:
大连化学物理研究所-中国石油天然气股份有限公司-碧辟(中国)投资有限公司合作项目.

Influence of reaction conditions on one-step hydrotreatment of lipids in the production of iso-alkanes over Pt/SAPO-11

WANG Congxin^a,c, LIU Qianhe^a,c, LIU Xuebin^d, YAN Lijun^e, LUO Chen^e, WANG Lei^a, WANG Bingchun^a, TIAN Zhijian^a,b

a Dalian National Laboratory of Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
b State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
c University of Chinese Academy of Sciences, Beijing 100049, China;
d Energy Innovation Laboratory, BP (China) Holdings Limited, Dalian 116023, Liaoning, China;
e Petrochemical Research Institute, PetroChina, Beijing 100195, China

Received:2012-11-24 Revised:2012-12-24 Online:2013-06-07 Published:2013-06-09
Supported by:
This work was supported by PetroChina and BP.

摘要/Abstract

摘要：

在固定床反应器中,以大豆油为模型原料,研究了反应温度、压力、氢油比和空速等条件对Pt/SAPO-11催化油脂一步加氢制异构烷烃反应的影响,并分析了反应中间产物、气体产物(CO,CO₂)及烷烃终产物的变化趋势. 结果表明,高温、低压或低氢油比可抑制酯、羧酸和醛的氢解以及醇的生成,促进油脂脱氧选择性地向脱羧和脱羰方向进行;异构烷烃收率随温度升高或空速减小而先增加后下降,但反应压力和氢油比的影响不大. 另外,对油脂一步加氢过程可能的反应历程进行了讨论.

关键词: 油脂, 烷烃, 加氢脱羧, SAPO-11分子筛, 加氢异构化

Abstract:

A one-step hydrotreatment of soybean oil to produce iso-alkanes has been carried out over a Pt/SAPO-11 catalyst in a fixed-bed reactor. The influence of reaction conditions such as temperature, pressure, hydrogen/oil ratio, and space velocity on the catalytic performance has been investigated. From the levels of intermediate products, gas products (CO, CO₂) and the target product (alkane), it was found that the hydrogenolysis of esters, fatty acids and fatty aldehydes and the formation of fatty alcohols were prohibited, which led to high selectivity for hydrodecarboxylation and hydrodecarbonylation at high temperature, low pressure or low hydrogen/oil ratio. The selectivity of the isomerization increased when temperature increased or space velocity decreased, while pressure and hydrogen/oil ratio were found to have no influence. A plausible reaction pathway has been proposed based on these results.

Key words: Lipid, Alkane, Hydrodecarboxylation, SAPO-11 molecular sieve, Hydroisomerization

王从新, 刘千河, 刘雪斌, 阎立军, 罗琛, 王磊, 王炳春, 田志坚. 反应条件对Pt/SAPO-11催化油脂一步加氢制异构烷烃的影响[J]. 催化学报, 2013, 34(6): 1128-1138.

WANG Congxin, LIU Qianhe, LIU Xuebin, YAN Lijun, LUO Chen, WANG Lei, WANG Bingchun, TIAN Zhijian. Influence of reaction conditions on one-step hydrotreatment of lipids in the production of iso-alkanes over Pt/SAPO-11[J]. Chinese Journal of Catalysis, 2013, 34(6): 1128-1138.

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反应条件对Pt/SAPO-11催化油脂一步加氢制异构烷烃的影响

Influence of reaction conditions on one-step hydrotreatment of lipids in the production of iso-alkanes over Pt/SAPO-11

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